Engine suspicions and F1 performance swings

Rumblings about unusual engine performance between Mercedes and Honda, Aston Martin's attempts to overturn Sebastian Vettel's Hungarian Grand Prix exclusion, Daniel Ricciardo's struggles and the latest moves in the F1 driver market are on the agenda. Mark Hughes and Scott Mitchell join Edd Straw to explain all, and make some sense of the performance swings between Red Bull and Mercedes.

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